Fix links on install page
Fix links on install page

The markup `<download.docker.com>` causes this link to be swallowed
and the following link to Docker Store being output as verbatim source.

Signed-off-by: Harald Albers <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@albersweb.de>

johnstep/docker.github.io,anweiss/docker.github.io,anweiss/docker.github.io,docker/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,anweiss/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,johnstep/docker.github.io,johnstep/docker.github.io